Moving picture apparatus



May 10, 1932. K. o. LEON 1,357,559

Y I MOVING PICTU RE APPARATUS Filed July so. 1928 4 Sheets-Sheet 1 May10, 1932. K. o. LEON MOVING PICTURE APPARATUS 4 Sheets-Sheet 2 FiledJuly so, 1928 May 10, 1932. g, o, LEON 1,857,559

MOVING PICTURE APPARATUS Filed July 30, 1928 4 Sheets-Sheet 3 2a E! EMay 10, 1932. K. o. LEON 1,857,559

MOVING PICTURE APPARATUS Filed July so, 1928 4 Sheets-Sheet 4 FatentedMay 10,1932 i i UNITED. STATES PAT ENT. OFFICE I osm LFDN, or Lrnirorme,swEDnN H movnwe rro'roan APPARATUS Application filed J'uly 30, 1928,Serial No. 296,143, and in Sweden Au'g'ust 4, 1927.

This invention relates to moving picture low each individual picture ofthe film a disapparatus of the type in which the film is contancecorresponding to the height ofthe pictinuously moved. ture, the prismsbeing then rapidly turned The object of the invention is to provide backagain to repeat the same operation in re- 5 simpleineans to compensatefor the motion of spect to the next picture. In Fig.1 the inieachindividual picture or photograph so that tial position of the beam asregards one icit' will be stationary on the screen. To this ture of thefilm is indicated by dotted lines end provision is made between thesource of and the corresponding final position by full light and thefilm of a system of movable mirlines. 10 rors or prisms-to project abeam of light The beam after having passed through the through the film,causing said beam, while film is conver ed by the lens 9 towards themoving parallel to itself, to follow each indiobjective 10 w iere itwill be given the angle vidual photograph or picture during a sufiiofpicture necessary for the magnification.

cient portion of its movement. Furthermore, In order to prevent thepicture from moving l5 rovision is made between the projecting lens onthe screen a prism 11 is provided situated and the screen of a prism ormirror or a sysafter the objective 10 which is rotatable about tem ofprisms or mirrors which is or are ahorizontal axis and is caused toswingabout movable in such a way as to reflect said movsaid axissynchronously with the movement ing beam on the same or substantiallythe of the'prisms 4, 5 in such a way as to reflect '20 same place on thescreen. the beam towards the same or substantially In the accompanyingdrawings a moving the same place of the screen. Between the pictureapparatus according to this invention prism 11 and the screen 13 theremay be prois shown by way of example. Fig. 1 is a diavided a stationaryprism 12 to reflect the beam gram illustrating the optical system of thein adirection suitable for the projection, as 25 apparatus. Fig.2 isalongitudinal section of shown in Fig. 1. As shown in'this figure a theapparatus on the line II-II in Fig. 3. certain displacement of eachindividual pic- Fig. 3 is a horizontal section of the apparatus ture istaken place, viz. from the dottedposion the line III-III in Fig. 2. Fig.4 is a tion to the full line position, such displacecross section of theapparatus on the line ment, however, may be eliminated or reduced IV-IVin Fi .3. Fig. 5is a detail section on to a neglectable amount bysuitable adjustthe line V- in Fig. 3. ment of the rotation of the prism11 and,

With reference to the diagram shown in eventually, also of the prism 12.Fig. 1, the numeral 1 indicates a source of After the principle of theoperation of the light the cone of light. from which is concenapparatushas thus been described above the trated by the lens 2 as a beam. Saidbeam is desi n of the apparatus will now be more thrown through anopening of the same size neai y explained with reference to Figs. 2-5 asa picture of the film which is formed in a of the drawings. wall .3, andbehind said Wall the beam en- The reference numeral 20 indicates thecounters atotal'reflecting prism 4. The light horizontal main shaft ofthe apparatus reflected by this prism is reflected by a simiwhich may beoperated either manually, as lar prism 5 upon the film .6 which isassumed by means of the hand lever 21 geared to the s to movecontinuously from. the reel 7 to the shaft 20. or electrically as by amotor (not reel 8. The prisms 4 and 5 are caused, as by shown) the shaft22 of which directl coumeans now shown, to move simultaneously at pledto the shaft 20 by a preferably, exible equal angular speed in the samedirection. clutch 23. Secured to the shaft 20 is a worm The speed ofrotation is so adjusted relative- 24 meshing with a worm'wheel 26carried by ly to the movement of the film that the beam a vertical shaft25. Secured to the shaft 25 reflected upon the film by the prism 5 willare two bevel gear'wheels 27 and 28 (see Fig. l move parallel toitselfat the same speed as 4) meshing in the bevel gear wheels 29 and 50the film! in such a way that the beam will fol- 30, respectively,secured to the shafts 31 and ment of the prisms are designed as follows,

it being noted that the means to erate the prism 11 will be firstdescribed (re erence being had to Figs. 3 and 5). The prism 11 issecured to a shaft 35 rotatabl mounted in a frame 36 that may slide in te longitudinal direction of the machine. The shaft 35 is connected by acrank shaped member 36 to a shaft 38 extending parallel to the shaft 35which ismounted in the machine frame at 39 and 40. Intermediate betweenits ends,

the shaft 38 is shaped as a strap 41 in which there is mounted a shaft42 extending at right angles to the shaft 38. The shaft 42 carries a cam43 and a toothed wheel 44 rigidly connected to said cam. The toothedwheel 44 meshes in a toothed wheel 45 secured to the,

main shaft 20 of the apparatus. Attached to the machine frame at eachside of the cam 43 and the toothed wheel 44 is a bracket 46, and mountedin eachsuch bracket upon journals at right angles to the shaft 38 is arotatable roller 47 to guide the cam by engaging it from the side nearits periphery. Attached to the shaft of each guide roller 47 is a bevelgear wheel 48 and 49, respectively, meshing in bevel gear wheels 50 and51, respectively secured to the shaft 20. The means to control theprisms 4 and 5 are of exactly the same design as described above inconnection with the prism 11 and the details of said means areindicatedby the same reference numeral as. those used in connection with thecontrol means of the prism 11 with addition of the index 1. The prism 4is connected to the prism 5 by means of a disc 52 secured to the shaft35 a similar disc 54 secured to the shaft 53 of prism 4, and rods 55interconnecting the discs.

The operation of the apparatus is as follows:

The rotation of the driving shaft 20 is transmitted through the wormgearing 24, 26 and the toothed gearings 28, 30 and 27, 29 to the filmmoving drums 33, 34 so that the film will be moved continuously.Furthermore, the movement is transmitted through the toothed wheels 44,45 to the cams 43 to rotate same. Through the- .intermedium of thetoothed gearings 48,50 and 49, 51 the guide rollers 47 are also rotatedat the same peripheral speed as the cams 43 whereby the wearing will bereduced to a minimum. The rotation of the cams 43 will cause the shafts38, 38' with the straps 41,41 to vibrate. The cams 43, 43 are of such ashape as to cause the straps to first swing in one direction through acertain angle and then more rapidly return in the opposite direction totheir initial position. The vibration of the straps 41 is transmitted bymeans of. the

shafts 38, 38' and the clutch members 37, 37 to the prism carrying shaft35 to cause the three prisms 4, 5 and 11 to vibrate synchronously. Theratio of gearing of the worm the film a distance corresponding to theheight of one picture of the film.

' The prism carrying frames 36, 36 are, as already stated, adjustable inthe longitudinal direction of the machine and their adjustment maybeeffected by means of hand wheels 60, 61 and 62, 63, respectively. Thiswill permit adjustment of the vibration of the prisms, as thedisplacement of the frame will changeposition of the shaft 38 of thestrap 41 relatively'to the shaft 35 of the prisms thereb effecting avariation of the effective length of the clutch member 37.

It is further to be noted that modifications may be made withoutdeparting from the principle or scope of the invention. For instance,the prisms may be replaced by mirrors and, furthermore, the design ofthe means for operating the prisms or mirrors -may be different fromthat illustrated.

source and the film, an objective, other light reflecting means situatedbetween-said objective' and a screen, and rotatably mounted parallelshafts to carry said li ht reflecting,

means, means to operate said s afts in synchronlsm comprising positivelydriven camdiscs rotatably mounted in straps rotatable about axes atright angles to the axes of the respective cam discs, and stationarymeans to guide said cam discs so as to cause them to oscillate abouttheir axes upon rotation of the cam discs about their own axes, andconnections between said stra s and the rotatable shafts carrying thelight reflecting means.

2. In a moving picture apparatus of the type having a source of light,means to continuously move the film, a system-of light reflecting meanssituated between said source and the film, an objective and other lighreflecting means situated between said ob jective and a screen,rotatably mounted shafts to carry said light-reflecting means, means tooperate said shafts comprising positively driven cam-discs rotatablymounted in straps rotatable about axes at right angles to the axes ofthe respective camdiscs, stationary means to guide said cam discs so asto cause the straps to oscillate about their axes upon the rotation ofthe camdiscs about their own axes, and adjustable connections betweensaid straps and the rotatable shafts carrying the light reflectingmeans.

3. type having a source of light, means to con- In a moving pictureapparatus of the tinuously move the film, a system of light refleetingmeanssituated betweensaid source of the film, an objective, other lightreflecting means situated between said objective and a screen, androtatably mounted parallel shafts to carry said light reflecting means,means to operate said shafts comprising positively driven cam-discsrotatably mounted. in straps rotatable about axes at right angles to theaxes of the respective cam discs, .sta-

tionary guiding means to cause said straps to oscillate'about their axesupon the rotation of the cam discs about their own axes,

. and crank shaped couplings connecting the shafts carrying the light reecting means and the shafts of the straps, said shafts being laterallyadjustable relatively to each other to effect variation of the ratio ofgearing of said couplings.

4; In a moving picture apparatus of the type having a source of light,means to contmuously move the film, a system of light reflecting meanssituated between said source and the film, an objective, other lightreflecting means situated between said objective and a screen, androtatably mounted parallel shafts to carry said light reflecting means,means to operate said shafts comprising positively driven cam discsrotatably mounted in straps rotatable about axes at right angles to theaxes of the res ctive cam discs, stationary' rollers to gui e said camdiscs so as to cause said straps to oscillate about their axes upon therotation of the cam discs about their own axes, and'crank shaped coulings connecting the shafts carrying the lig t reflecting means and theshaft of the stra s,

-said light reflecting means together wlthname.

their shafts being mounted in adjustable frames to enable variation ofthe ratioof.

gearings of said couplin r In testimony-whereo? I have signed myKARLOSKAR LEON.

